Automatic suction web carrier



" April 1926.

F. W. M NAMARA ET AL AUTOMATIC SUCTION was CARRIER Fild Nov. 2O ,1 1924 ed; 'III/IIIiIIlllIIIIIImllIll/lllllllII;IIIIIIIIIIIIIIIIII(((III En-Jr ETlllllllllllll((Illllllllilllll IlllillllllliilIlIIIIlIIlIIIII/IA Patented Apr. 27, 1926;

UNITED STATES PATENT orricn.

FRED V]. MoNAMA-RA AND EDWARD SHEAI-IAN, 0F MAN'ISTIQUE, MICHIGAN; SAID MGNAMARA ASSIGNOR TO SAID SHEKHAN.

nn'roirm'rrov SUCTION WEB CARRIER. v

Application filed. November 20, 1924. I Serial No. 750,997.

T 0 all whom it may concern Be it known that we, FRED WV. MCNAMARA and EDWARD SHEAHAN, both citizens of the United States and residents of the city of halanistique in the county of Schoolcraft and State of Michigan, have invented certain new and useful Improvements in an Automatic Suction lVeb Carrier; and we do hereby declare'that the following is a full, clear, and exact description ofthe same,reference being had to the accompanying drawings and to the numerals of reference marked thereon, which form a part of this specifi cation. 7

This inventioi'rrelates to an automatic suction Web carrier, and particularly to a device or apparatus which is adapted to automatically-transfer a web in a paper making machine from one roll, such as for example a top press roll to a succeeding conveying means, thus facilitating the transfer of the web or sheet through the machine. I

The operations above referred to have heretofore in a majority of cases been manually PGFfOT'IIlGClybHlTCllG high speed of operation of modern paper making machines makes such manualtransference of the web extremely difficult and dangerous-to the machine tender who must be highly skilled to accomplish the same as heretofore-generally practiced. Such manual transference of the web alsois attended by large percentage of waste which is of course'undesirable.

It is an important object therefore of this invention to provide an. automatic web carrier ortransfer device which overcomes the above difficulties andwhich is particularly adapted: for use on high speed'machines.

It is another object of this invention to provide an apparatus for the purpose de* scribed which has an'improved web tearing device associated therewith.

It is also an important object of this invention to provide an apparatus of the kind described whereby the web is removedfrom the rollby suction means and transferred to the belt by mechanical means associated with said suction means.

It is a further important object of this invention to provide apparatus for the purpose described wherein the carrier or trans fer means do not contact the roll from which the web is removed. Y

Other and further important objects of the invention will be apparent from the disclosures in the specification and theaccompanying drawings.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings: p I Figure '1 is a fragmentary side elevation of a portion of a paper making machine which is equippedwith one form of the improved apparatus of this invention.

Figure 2 is a fragmentary detail section illustrating the construction of the-suction roll and the position thereof relative to the press roll.

Figure 3- is an enlarged fragmentarysection on the line 33 of Figure 1 witlizparts omitted and parts in elevation.

Figure at is an enlarged detail view ofthe suction nozzle which is-mounted on the interior of the suction roll.

As shown on the drawings:

The reference numeral 1 indicates aconventional frame or housing for the press rolls of a paper making machine, the upper press roll being designated by-the reference numeral 2 and the lower press roll being designated by the reference-numeral 3. Passing between said press rolls 2 and 3 is a usual felt l which carries the web between said press rolls to advance the same through themachine. Mounted upon a table or frame 5 which forms a part of the 'paper'ma king.

machine are spaced bearing bracketsG and 7 which rotatably support a tubular member 8. Said tubular member 8 has a drive pulley 9 secured thereto between the bearing brackets (5 and 7 as clearly shown in Figure 3. Secured to the outer end of the tubular member and rotatable therewith is a perforated cylindrical member or suction roll 10 which may be constructed of any length desired relative to the length of the upper press roll 2, and which as shown in Figure 2 has its axis-parallel t the axis of said press roll, and has its exterior surface positioned incloseproximity to, but separated a short distance from, the exterior surface of the press roll.

Extending through the tubular member 8 V valve 12 may be operated by a suitable han- 17 through which suction is applied to the apertures in the suction roll 10 as the same rotates therepast.

The perforated suction roll 10 and the tubular member 8 are driven by means of a belt 18 or other suitable driving connection, in the present embodiment said belt 18 being shown as driven from a pulley 19 mounted on the end shaft of one of the press rolls 20.

Means are provided for tearing the paper prior to transference thereof from the upper roll 2 by the suction roll 10. Said means comprise a rod 21 which is mounted for both longitudinal and rotative movement in suitable guide brackets 22 secured to the table 5 adjacent the pieces of the bottom of the bearing brackets 6 and 7. The rod 21 is provided at one end with a suitable operating handle 22 and the inner end thereof is provided with a tearing member or projection 24: which projects at right angles to the axis of the tearing member 21 and which may, by rotation of said member 21, be turned into contact with the web on the roll 2 and drawn longitudinally across the face of said roll to tear the web and to permit the same to be drawn away from the roll by the suction exerted thereon through the suction roll '10 from the suction nozzle 1617.

The relative direction of rotation of the upper press roll 2 and the suction roll 10 is indicated by the arrows on the drawing and in the embodiment of this invention as shown herein the web travels through the machine from left to right, so that the portion of the web which is carried upwardly around the upper press roll 2 may be torn by actuation of the member 21 and the suction turned on through actuation of the valve 12 so that the torn end of the web is drawn onto the roll 10 whence it is thrown onto the felt to be carried forwardly to the machine. It is apparent that this action will ensue since the suction roll 10 is constantly rotating and as soon as the torn end of the web is drawn thereto by suction the direction of rotation thereof will tend to throw the same down- Wardly onto the felt.

This invention thus provides an apparatus which may be very satisfactorily used in high speed paper making machines for transferring the web from a roll to a felt or other member adapted to carry the same forwardly through the machine. In the use of the apparatus of this invention, all danger to the operator and a large amount of the waste 7 with other parts of the machine and similar machines for the purpose of removing the web or sheet from a roll and transferring the same to a subsequent transferring or carry ing apparatus.

We are aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and we therefore do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

We claim as our invention:

1. The combination witha roll, of means for removing a web therefrom comprising web tearing means adapted to be brought into contact with the roll and moved longitudinally'thereof, and suction means for removing the Web from the roll after it has been torn.

2. Means for removing a web from a roll comprising a web tearing member capable of rotary movement into contact with the roll and longitudinal movement therealong, and suction means for removing the web from the roll after it has been torn.

3. Means for removing a web from a roll comprising a web tearing member capable of rotary movement into contact with thev roll and longitudinal movement therealong, and rotary suction means for removing the web and automatically tearing the same from the roll.

1. Means for transferring a web from a roll comprising a perforated rotating member adjacent to but not contacting the roll and means for creating a sub-atmospheric pressure inside said member, whereby the web is drawn towards said member.

5. Means for transferring a web from a roll comprising an apertured member rotating in the same direction as the roll and adjacent to but not touching said roll, and suction creating means inside said member adapted to draw the web from said roll to said member. I

6. Means for transferring a web from a press roll comprising an apertured member rotating in the same direction as the roll and adjacent to but not touching said roll, and stationary suction creating means inside said member.

7. Means for transferring a Web from a roll comprising a rotary suction member in close proximity to but not touching said roll. I

8. Means for transferring a web from a roll comprising an apertured rotary member in close proximity to but not touching said roll and a suction nozzle inside said rotary member with an opening extending longitudinally thereof.

9. In a paper making machine, apparatus for transferring the web, and comprising in combination with the press rolls and the felt engaged thereby, a rotary suction member for removing the web from one of the press and transferring the same to the felt, said suction member not cont-acting the press roll, and means capable of rotatable and longitudinal movement for tearing the web on the press roll prior to such transference by the suction member.

11. The combination with a roll, of means for removing a web therefrom comprising web tearing means adapted tobe brought into contact with the roll and suction means for removing the web from the roll after it has been torn.

12. Means for transferring a web from a roll comprising a rotary suction member journaled in stationary bearings in close proximity to but not touching said roll and means for applying suction through said member to act upon said web.

In testimony whereof we have hereunto subscribed our names.

FRED WV. MONAMARA. EDWARD SHEAHAN. 

